Internal-combustion engine.



J. RhWARREN.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY 19.1917.

1,2?8533 Patented Sept. 10,1918.

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APPLICATION FILED JULY I9 1917.

Patented Sept. 10, 1918.

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I. R. WARREN.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED IULY I9. I917.

Patented Sept. 10, 1918.

3 SHEETSSHEET 3.

gwum Mot JOHN R. WARREN, OE GRAND RAPIDS, MICHIGAN.

INTERNAL-COMBUSTION ENGINE.

To all whom it may concern:

Be it known that I, JOHN R'WARRnN, a

citizen of the United States, residing at vide an improved rotary valve for a fourstroke-cycleengine which shall not be sub- 7 ject to binding or sticking due to heating; andfurther, such a valve having a' plurality of longitudinally extending exhausting passages spaced apart; and further, such a valve I having such exhausting passages spaced apart by a passage; and further, such a valve having a passage commun cating wlth the carbureter so that air may be drawn through said passage to cool the exhausting passage and then forced warm into the carbureter; and further, to provide such a valve into whose exhausting passages the same cylinder exhaust alternately; and further, to provlde in such "an-engine, meanswhereby a desired amount of air drawn through the valves air passage may be diverted from the carbureter,

another amount-being forced thereintoyand further, to provide such a .valve whose openings, ports and passages may be identical on opposite sides of its axis, whereby the valve may be economically cast in a mold; and further, to provide improved means for connecting the rotary valve with the engmes exhaust pipe.

These objects are attained by, and the invention finds preferable embodiment in, the structure hereinafter articularly described and illustrated by the accompanying drawings, in which Figure I is an end view of a. four-strokecycle internal combustion engine having four cvlinders, the end can of the gear housing being removed and the position of gears being indicated;

Fig. 2 is a longitudinal sectionalv-iew of the same taken on planes corresponding to line 22 of Fig. 3;

Fig. 3 is a transverse sectional view of the same taken on a plane corresponding-to line 3-3 of Fig. 2; and

Fig. 4 is a view of adjustable air connections leading to the carbureter.

In the embodiment of the invention chosen for illustration by the drawings and Specification of Letters Patent.

Patented Sept. 10, 1918.

Application filed July 19, 1917.. Serial No. 181,482.

- for detailed description in the body of this specification, the pistons (one of which appears at 2) of the internal combustion engine .1 of the usual four-stroke-cycle type, have connecting rods 5, 6, 7 8 for revolving the crank shaft-9. This shaft with its cranks is inclased in acasing 10 adapted to contain a lubricant. The engine rotary valve 12 bears in a continuous valve chamber 13 and isdriven (one revolution to the crank shaft s four revolutions) by suitable means as by the gears, 50 on the crankshaft, 51 and 52 rotating together as one on a spindle 53, and 54 on the shaft 57. The valve chamber has acom'bustible fluid-inlet 20 from the carbureter '55,,and ports 21, 22, 23, 24 leading to the engine cylinder respectively. The valve 12 has an intaking passage comprising an annular depression 25, into which said inlet '20 directly opens, such depression opening into the intaking passages portions 26, 27 on either side: these portions 26, 27 are arcuate in cross section and concentric with the axis of the valve, and have two diametrically opposite outlets 28, 56 to each cylinder and aloutlets 28 to cylinders 3 and 4. The valve 12 contains two parallel exhaust passages 58,

- 66 extending longitudinally of the valve and spaced apart by an air passage 59. The outer wall 60 of each exhaust passage is spaced from the peripheral wall 61 of the valve by the arcuate portions 26, 27 of the combustible fluid intaking passage, and the side walls 62 of each exhaust passage are spaced from said peripheral wall by said air passage, the inner walls 63 of the exhaust passages being wholly spaced apart by said air passage. It is evident that when the exhaust passages become heated, the inner walls 68 may expand toward each other. and the side walls 62 of each exhaust passage outwardly from each other (thus contracting the air passage) without ap recia-blyexpanding the valve in its cham er and cansing it to tighten or bind therein, the outer wall 60 of each exhaust passage similarly expanding and thus contracting the arcuate passages 26, 27.

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The valve chamber is provided with alined ports 21, 2% communicating with the first cylinder 6i and the fourth cylinder, and alined ports 22, 23 communicating with the second and third cylinders, for the intaking of the combustible fluid and the exhausting of the products of combustion. The ports 21, 24 are angularly disposed forty-five degrees fromthe ports 22, 23. By the angular disposition as above described of the various openings through the walls of the valve and valve chamber, economy of production is furthered, inasmuch as the sides of the valve on opposite sides its axis are alike, whereby the valve may be easily cast in a mold. Diametrically opposite exhaust ports 67, 68 for each cylinder extend through the peripheral wall 61 of the valve,67 to the exhaust passage 58 and 68 to the exhaust passage 66. These exhaust ports forthe first and second cylinders are respectively preferably alined, as are those for the third and fourth cylinders, the ports 67 for the first and second cylinders being angularly disposed ninety degrees from the ports 67 for the third and fourth cylinders. This angular disposition of intakes and exhaust ports in the valve and valve chamber will be varied with the number of cylinders, the above applying to an engine having four cylinders. It will thus be seen that each cylinder intakes combustible fluid twice in the valves rotation and exhausts twice, once into the valves exhaust passage 58 and once into the other passage 66 .which are diametrically opposite. By this arrangement the valve is evenly heated on opposite sides and its tendency to warp out of axial alinement or to expand unevenly is minimized.

Fig. 3 shows the first cylinder 64 just after it has completed its exhaust stroke, the combustion products having been expelled through the port 67 into the valves exhaust passage 58. WVhen the valve turns so as to open the intake passage 28 to the port 21 the fluid is drawn into this cylinder. Air is drawn by the fan 69, rotated as by gears 54, 70, through the opening 71 and around the branches 58, 66 of the valves exhaust passage (which discharges at 72), in the direction indicated by the arrows in Fig. 2, during which course it cools the exhaust passages, and is then forced thus warmed through the tube 76 into the carbureter 55 for mixing the combustible fluid. The amount of such air thus forced into the carbureter may be governed by turning. the member 74, pivoted at 75 and carrying one end of the flexible air tube 76, so as to registeiin greater or less degree the mouth of this tube 76 with the opening 77 of the fans discharge pipe 78.

The outer end 79 of the valve is spaced from the wall of the orifice 80 throu h which it extends, so that when expanded y into the valve chamber.

heating it may not contact therewith. A chamber 81, separated from the valve chamber, and having an outlet 82, is adapted to receive any of the products of combustion which might otherwise run inwardly along the outside of the exhausts nozzle 72 and Orifices for spark plugs are shown at 83, the engine fly-wheel at 8 1, and water jackets at 85.

A connection of the valves casing with the exhaust pipe 86 of the engine is shown at the left hand side of Fig. 2. It will be seen from this view that although the valve rotates, a closedconnection between the engines exhaust and the muflier (not shown) or the outside air, is provided, and that too although the valves nozzle 72 does not bear where the connection with .the pipe 86 is made.

The invention being intended to be defined solely by the claims is not to be limited to or by details of construction shown or describe I claim:

1. In a four-stroke-cycle internal combustion engine having a plurality of engine cylinders; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamher and having an intaking passage com municating with said inlet, said passage having outlets communicating with the ports respectively in certain positions of. the valve; the valvehaving also a plurality of exhausting passages extending longitudinally of the valve and communicating with all the cylinders respectively in certain positions of the valve, and with their adjacent walls spaced apart; inlets to the exhausting passages communicating with the ports respectively.

2. In a four-stroke-cycle internal combustion engine having a plurality of engine cylinders; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having an intaking passage communicating with said inlet, said passage having outlets communicating with the ports respectively in certain positions of the valve; the valve having also a plurality of exhausting passages extending longitudinally of the valve and communicating with all the cylinders respectively in certain positions of the valve, and spaced apart by a passage for cooling fluid; inlets to the exhausting passages communicating with the ports respectively.

3. In a four-stroke-cycle internal combus tion engine having a plurality of engine cylinders; a valve chamber'having an inlet and ports to the cylinders respectively; a

rotary engine valve, bearing in said chamber and having an intaking passage communieating with said inlet, said passage having outlets communicating with the ports respectively in certain positions of the valve; the valve having also a plurality of exhausting passages extending longitudinally of the valve and communicating with all the cylinders respectively in certain positions of the valve, and spaced apart by a passage for cooling fluid; inlets to the exhausting passages communicating with the ports respectively; and means for forcing a cooling fluid through the said passage therefor.

4. In a four-stroke-cycle internal combustion engine havin a plurality of engine cylinders and a car ureter; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having an intaking passage communicating with said inlet, said passage having outlets communicating with the ports respectively in certain positions of the valve; the valve having also a plurality of exhausting passages extending longitudinally of the valve and communicating with all the cylinders respectively in certain positions of the valve, and spaced apart by an air passage having a continuation extending to the carbureter; inlets to the exhausting passages communicating with the ports respectively; means for forcing air through the air passage and thence into the carbureter.

5. In a four-stroke-cycle internal combustion engine having a plurality of engine cylinders and a carbureter; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having an intaking passage communicating with said inlet, said passage having outlets communicating with the ports respectively in certain positions of the valve; the valve having also a plurality of exhausting passages extending longitudinally of the valve, and spaced apart by an air passage having a continuation extending to the carburetor; inlets to the exhausting passages communicatin r with the ports respectively; means for orcing air through the air passage and thence to the carbureter; adjustable means for diverting from the carbureter a desired amount of the air forced through the air passage.

6. In a four-stroke-cycle internal combustion engine having a plurality of engine cylinders and a carbureter; a valve chamber having an inletand ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having an intaking passage communicating with said inlet, said passage having outlets commun cating wlth the ports, respectively in certain positions of the valve; the valve having also an exhausting passage extending longitudinally of the valve and communicating with all the cylinders respectively in certain positions of the valve, and an air passage having a continuation extending to the carbureter; inlets to the exhausting passage communieating with the ports respectively; means for forcing air through the air passage and thence to the carbureter.

7. In a four-stroke-cycle internal combustion engine having a plurality of engine cylinders; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having intaking passages communicating with said inlet, said passages having outlets communicating with the ports respec tively in certain positions of the valve; the valve having also a plurality of exhausting passages extending longitudinally of the valve and spaced apart by an air passage and spaced from the valves peripheral wall by the valves intaking passages; inlets to the exhausting passages communicating with the ports respectively.

8. In a four-stroke-cycle internal combustion engine having a plurality of engine cylinders; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having intaking passages coniinunicating with said inlet, said passages having outlets communicating with the ports respectively in certain positions of the valve; the valve having also a plurality of exhausting passages extending longitudinally of the valve and communicating with all the cylinders respectively in certain positions of the valve; inlets to each exhausting passage communicating with the port to each cylinder.

9. In a fonr-stroke-cycle internal coinbustion engine having a plurality of en gine cylinders and a carburetor; a valve chamber having an inlet and ports to the cylinders respectively; a rotary engine valve, bearing in said chamber and having an intaking passage communicating with said inlet, said passage having outlets communieating with the ports respectively in certain positions of the valve; the valve having also an'exhausting passage extending longitudinally of the valve and an air passage having a continuation; a flexible pipe communicating with the carbureter at one end; a turnable member to which the other end of said pipe is attached and adapted to be turned to bring its end of said pipe into greater or less registration with the mouth of the air passages continuation.

In testimony whereof I have hereunto set In hand.

y JOHN R. WARREN. 

